European leaders have thrashed out the latest in a series of deals designed to convince the financial markets that the single currency is safe and its members are creditworthy. But, after a fraught week in Brussels, there remains plenty to sort out.

In the studio, Martin Kettle, Rafael Behr and Anne Perkins examine the details of a plan that could effectively use Germany's economy as collateral for the debts of southern Europe. What this means for the politics of the EU remains to be seen.

Also this week: after a petition was signed by more than 100,000 people in Britain calling for a referendum on continued EU membership, the motion was defeated in parliament. But 81 Conservative members rebelled against their whips, creating a major party management problem for David Cameron.

Philip Cowley, the professor of politics at Nottingham University, says that this is already the most rebellious group of MPs since 1945 – and history shows that rebellions increase over the cycle of a parliament.